Machine for making toe-calks.



W. J. KENT.

MACHINE FOR MAKING TOE GALKS. APPLICATION FILED 111111. 25, 1911.

1,001 ,862, Y Patented Aug. 29, 1911.

4 SHEETS-SHEET 1.

Fig. 1

INVENTOR WITNESSES: v @ZM MA 15 y A zzorneys,

W. J. KENT. MAGHINE FOR MAKING TOE GALKS. rrmonmn FILED MAR. 25, 1911,

1,001 ,862. 1 Patented Aug. 29,1911.

4 SHEETS-SHEET 2. Fig.2

INVENTOR WITNESSES: M

LQWWLA By Altai Mays,

Y m vgk Z LWW COLUMBIA PLANO W. J. KENT.

MACHINE FOR MAKING TOE GALKS. APPLIOVATION FILED MAR. 25, 1911.

7 1,001,862 Patented Apg.29,1911.

4 SHEETS-SHEET 3.

INVENTOR WITNESSES: 5

By Atzomeys;

COLUMBIA PLANOURAPN CO WASHlNGTON u c W. J; KENT.

MACHINE FOR MAKING TOE GALKS.

APPLIUATION TILED MAR. 25, 1911.

1,001 ,862, Patented Aug. 29, 1911.

4 SHEBTS-BHEET 4.

Fig. 6

q I v INVENTOR WITNESSES:

By Azzomeys,

COLUMBIA PLANOG WILLIAM J. KENT, OF NEW YORK, N. Y.

MACHINE FOR MAKING TOE-'CALKS.

Specification of Letters Patent.

Application filed March 25, 1911.

Patented Aug. 29, 1911.

Serial No. 616,939.

To all whom it may concern:

Be it known that I, WILLIAM J. KENT, a citizen of the United States,residing in the borough of Brooklyn, county of Kings, city and State ofNew York, have invented certain new and useful Improvements in Machinesfor Making Toe-Calks, of which the following is a specification.

This invention relates to machines for making toe-calks for horse shoesand aims to providecertain improvements therein.

In a pending application Serial No. 616,938, filed March 25, 1911, Ihave described and claimed a certain new and improved toe-calk andprocess of making the same, which toe-calk consists preferably of a bodyportion having a fastening nib formed of metal swaged down from the bodyportion between the ends of the latter. According to the process setforth in the above application the metal is swaged or punched betweenthe ends of the calk and shaped to the desired configuration, preferablyby a series of 'swaging operations successively performed upon a bar ofcold metal, the finished calks being severed from the bar at such pointsas to locate the nibs between the ends of the calks. According to thepresent invention I provide a machine for carrying out the steps of thisprocess in an efficient and rapid manner so that the calks may becommercially produced in an economical way.

In the drawings wherein I have illustrated one form of theinvention,-Figure 1 is a front view thereof broken away to disclose someof the parts. Fig. 2 is an end view of Fig. 1 looking to the right. Fig.3 is a plan of the bed of the machine, the punches being removed. Fig.4: is a side elevation of Fig. 3 showing the lower ends of the punches.Fig. 5 is an end view of Fig. 4 looking to the right. Fig. 6 is a planview of the strip of metal showing the various operations. Fig. 7 is anedge view thereof. Fig. 8 is a side view of the calk. Fig. 9 is an endview thereof.

Referring first to Fig. 8, let A indicate the body of the calk and B itsnib. The nib as set forth in the application previously referred to isconstructed preferably by swaging down a portion of the metal formingthe body between the ends of the latter. Preferably the calks are fullyformed from a bar y of low grade steel by a succession of .al; swagingoperations before the lndividual calks'are severed from the bar. InFigs. 6

and 7 I have shown a bar illustrating these successive operations,although in practice some of them may be omitted. In these figures theparts marked 1, 2 and 3 illustrate the shape of the bar after the firstthree swaging operations. These operations are performed by appropriatedies striking the body of the metal near its edge and swaging out aportion thereof beyond the edge of the bar in the forms shown. Aftersufiicient metal has been so swaged, it is acted upon by lateral dieswhich give the nib the shape shown at 4. The nib is then acted upon byconfiguring dies which corrugate it or roughen it in the desired manneras shown at 5, and after this operation is completed the calk is severedfrom the bar. As illustrated in Figs. 4 and 5 preferably the bar isgiven an idle step before the action of the shearing dies (indicated at6) in order to avoid crowding the mechanism. The machine provided by thepresent invention for effecting these operations is illustrated in Figs.1 to 5.

Referring first to Figs. 1 and 2, let G indicate a punching press ofsuitable proportions having a plunger D operated by a pitman E connectedwith a crank shaft F which is driven by a suitable pulley G. The throwof the plunger D may be adjusted by any suitable mechanism H. The pressis controlled by the usual treadle M. The forming dies by which themetal is swaged beyond the edge of the bar preferably con1- prise aseries of punches carried upon the plunger and a series of fixed diessupported in the bed J of the machine. I preferably employ three swagingpunches a 7; and c (Fig. 4:) which are carried upon a plate K fixed tothe under side of the plunger. Immediately beneath the punches at Z) care arranged a series of dies a 7) 0 (Fig. 3). Each of the punches ispreferably of the configuration shown in Fig. 5 wherein the active facesof the punches are indicated by the letters a b 0, these active facesbeing formed integrally with a punch carrier or guide m which isdesigned to fit within a slot m, m or m formed in a guiding plate 0fixed above the bed of the machine in order to support the punchesagainst the lateral strain due to the fact that they act upon the edgeof the bar. It will be observed that the punches at b 0 are of differ--ent degrees of projection so that the metal is forced outwardly to anincreasing extent at each operation. The fixed dies a, Z) c are,however, shown as of the same degree of projection with the result thatthe nib is displaced somewhat toward one side of the bar. However, by anappropriate mounting of the fixed dies and movable dies the nib may belocated at any point desired in the thickness of the metal. Indeed oneset of dies may be omitted if desired so that the metal is displacedwholly to one side, although this is not preferred. After sufficientmetal has been swaged out beyond the edge of the bar to form the nib,the nib is given its proper shape by means of dies (Z d d d Of these thedies (Z (Z (Fig. 3) are laterally acting dies, one of which (i is shownas fixed and the other of which (Z is shown as movable being pivoted atits front in any suitable manner. It is actuated by a cam 79 fixed tothe plunger and having a cam face p which bears against the outer sideof the die and forces it to the left, thereby giving the nib atriangular shape as shown at 4 in Figs. 6 and 7. Preferably a spring isprovided for normally holding the die in its retracted position. Duringthis lateral swaging operation the dies (Z (Z act principally as holdingdies, in order to prevent the metal from crowding upward and gowznwardduring the action of the dies After the formation of the body of the nibin the manner just described the latter is according to the presentinvention subjected to the action of configuring dies 6 e which roughenor corrugate the nib in order to enable it to hold its position in thehorse shoe when it is driven into the latter. These operationspractically complete the nib and it remains only to sever the bar at anappropriate distance from its end in order to form the completed calk.This in the present form of the invention is efiected by the two cuttingor shearing knives f f, the former of which f is carried on the plungerwhile the latter is held in the bed of the machine. In order to providesuitable means of adjustment the knife or blade f is arranged in anangular position and is adapted to be acted upon at .its rear by anadjusting screw as. The knives are so arranged relatively to the lastset of dies that the cut.6 in Figs. 6 and 7 will sever the completedcalk between two successive nibs as they are formed upon the bar. Bythis means the nib instead of being located at the end of .the calk ispreferably located between its ends as best shown in Fig. 8. Bypreference the bar is given an idle movement of one step before reachingthe cutting position in order that the cutting mechanism may bedisplaced to the right a Sui icient distance to avoid crowding thepunches.

At the right hand side of the machine is provided a gage 1" which ispreferably the inner end of adjustable screw 8 against which gage theend of the bar rests at the end of each feeding movement.

Any suitable means may be provided for holding the bar during thepunching movements, but it is preferably guided in a channel formed byan adjustable abutment t and the plate 0 best seen in Figs. 3, 4 and 5.

The feeding movements may be accomplished in any desired way, by hand orby devices provided for this purpose, and in Figs. 1 and 2 I haveillustrated a common form of feed which consists essentially of a slideit having pivoted at its forward end a feed dog u, the upper end ofwhich is connected by a rod 1& with a bell crank lever a which isoscillated by a pitman a actu ated by a crank disk 10 When the pitman ais depressed, the dog a is tilted back" wardly, thus freeing itsengaging end from the stock, and upon a continuation of this movementthe slide a is drawn back, while the rod, being held between the guides,remains stationary. When the pitman u begins its upward movement thefirst effect is to tilt forward the dog a to again engage the stock,and'upon this movement being continued, the slide u moves forwardly withthe stock.

Whether hand feed or machine feed be adopted, it is necessary ordesirable that the stock after each operation of the dies shall bedisengaged from the lower dies, so as to permit it to be moved forwardto its next position. Itis also necessary or desirable that the partlyformed nib shall pass over the die (Z into position to be shaped whilethe nib previously shaped is passed over the die d toward theconfiguring dies. While this result can be attained by depressing thedies I prefer. for this purpose to elevate the stock, and in theconstruction this is accomplished by a series of lifting pins '0 '0(Figs. 1, 2, 4 and 5) which pass up through the bed plate of the machineand engage the under side of the stock. The pins 2; o are engaged attheir lower ends by a lifter bar co fixed to a levenw which is actuatedby an eccentric rod 10 connected with an eccentric upon the main shaft.The parts are so timed in their operations that after the ascent of thepunch the stock is lifted and then fed forwardly by the feedingmechanism before thenext succeeding operation of the plunger.

.By the machine just described I am enabled to rapidly form toe-calksfrom a, metal bar of ordinary stock dimensions without the necessity ofheating the bar. I am further enabled to produce a calk in which the nibis located between the ends of the calk, which permits the calk to beapplied to a horse shoe without the necessity of driving the nib intothe crease of the shoe. The invention also permits me to eifect aconsiderable saving in cost over other processes of manufacture whereinthe desired location of the nib is attained since the operation offorming the nib by my invention is accompanied by no waste of metal.

The machine herein described can easily be adjusted to adapt it for themanufacture of toe-calks of different proportions. The throw of theplunger is adjustable by the mechanism H while the degree of projectionof the lower dies may be easily varied by introducing filling piecesinto the die socket-s. If calks of different lengths are required, thebed plate J and plunger plate K and their connected mechanism can beeasily separated from the press and others of appropriate constructionsubstituted therefor.

The machine thus described while primarily intended for the productionof toe oalks is adapted for the manufacture of other devices in whichsimilar operations are to be performed.

While I have described in detail one form of the invention, it is to beunderstood that I do not wish to be limited thereto since wide changesin construction and operation may be made without departing from thespirit of the invention.

What I claim is 1. In a machine for making toe-calks or the like, thecombination of a plurality of dies, adapted to act upon a bar of metalto swage a portion of the metal thereof beyond the edge of said bar,said dies adapted to act successively upon said portion to form a nib.

2. In a machine for making toe-calks or the like, the combination of aseries of dies, adapted to act upon a bar of metal to swage a portion ofthe metal thereof beyond the edge of said bar, said dies adapted to actsuccessively upon said portion to form a nib, and means for cutting 01fa portion of said bar to form a toe-calk.

3. In a machine for making toe-calks or the like, the combination of aseries of dies spaced apart a distance substantially equal to the lengthof the finished calk, means for moving said dies substantiallysimultaneously to act upon a bar of metal and means for guiding said barin such relation to said dies that the latter act upon the edge of thebar to successively form a series of nibs.

4. In a machine for making toe-calks or the like, the combination of aseries of dies spaced apart a distance substantially equal to the lengthof the finished calk, means for moving said dies substantiallysimultaneously to act upon a. bar of metal, means for guiding said barin such relation to said dies that the latter act upon the edge of thebar to successively form a series of nibs, and means for lifting saidbar after each operation of said dies.

5. In a machine for making toe-calks or the like, the combination of aseries of dies spaced apart a distance substantially equal to the lengthof the finished calk, means for moving said dies substantiallysimultaneously to act upon a bar of metal, means for guiding said bar insuch relation to said dies that the latter act upon the edge of the barto successively form a series of nibs, and means for feeding said bar.

6. In a machine for making toe-calks or the like, the combination of aseries of dies mounted to act upon a bar of metal to swage a portion ofthe metal thereof beyond the edge of the bar, and means for laterallyshaping the nib thus formed.

7. In a machine for making toe-calks or the like, the combination of aseries of dies mounted to act upon a bar of metal to swage a portion ofthe metal thereof beyond the edge of the bar, and means for laterallyshaping the nib thus formed, said means comprising a laterally actingdie and means for actuating the same.

8. In a machine for making toe-calks or the like,the combination of aseries of dies mounted to act upon a bar of metal to swage a portion ofthe metal thereof beyond the edge of the bar, said dies being graduatedto successively act upon the swaged metal, a shaping die for laterallyshaping said swaged metal, and a configuring die adapted to roughen orcorrugate the nib thus formed,

9. In a machine for making toe-calks or the like, the combination of aseries of movable dies and a series of fixed dies co-acting therewith,said dies being adapted to act upon both sides of a bar of metal toswage a portion of the metal thereof on both sides of the bar beyond theedge of the latter, whereby to form a nib.

10. In a machine for making toe-calks or i the like, the combination ofa series of movable dies and a series of fixed dies co-aeting therewith,said dies being adapted to act upon both sides of a bar of metal toswage a portion of the metal thereof on both sides of the bar beyond theedge of the latter, whereby to form a nib, and means for lifting saidbar after each operation above the fixed dies whereby the bar may beadvanced.

11. In a machine for making toe-calks or are also respectively fixed tosaid plunger and bed.

12. In a machine for making toe-calks or the like, the combination of amovable plunger having a series of punches, a bed having a series offixed dies beneath said punches,

series of lifting rods adapted to act against the under side of said barto lift the same, and means for actuating said rods after each operationof said plunger.

13. In a machine for making toe-calks or the like, the combination of aplurality of dies adapted to act upon a bar of metal to swage a portionof the metal thereof beyond the edge of said bar, said dies adapted toact successively upon said portion to form a corrugated nib.

14. In a machine for making toe-calks or the like, the combination ofsuccessively acting dies comprising an indenting die adapted to act uponthe side portion of a body of metal to indent the latter and swage aportion of the metal thereof beyond the edge of the bar, and acorrugating die adapted to act subsequently upon said portion to form acorrugated nib.

In Witness whereof, I have hereunto signed my name in the presence oftwo sub- 7 scribing witnesses.

WILLIAM J. KENT.

Witnessesz EUGENE G. MYERS, THOMAS F. WALLACE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

